Chevrolet Malibu 2003 Manual page 201

The fuel cap is located behind a hinged door on the
passenger's side of your vehicle. To open the door,
insert your finger into the finger depression next to the
fuel door.
While refueling, hang the tethered cap inside the
fuel door.
To remove the fuel cap, turn it slowly to the left
(counterclockwise). The fuel cap has a spring in it;
if you let go of the cap too soon, it will spring back
to the right.
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